<?php
//=======================================================================
// File:        JPGRAPH_THEME.INC.PHP
// Description: Class to define graph theme
// Created:     2010-09-29
// Ver:         $Id: jpgraph_theme.inc.php 83 2010-10-01 11:24:19Z atsushi $
//
// Copyright (c) Asial Corporation. All rights reserved.
//========================================================================


// include Theme classes
/*foreach (glob(dirname(__FILE__) . '/themes/*.php') as $theme_class_script) {
 require_once($theme_class_script);
 }*/

require_once("themes/AquaTheme.class.php");
require_once("themes/GreenTheme.class.php");
require_once("themes/OceanTheme.class.php");
require_once("themes/OrangeTheme.class.php");
require_once("themes/PastelTheme.class.php");
require_once("themes/RoseTheme.class.php");
require_once("themes/SoftyTheme.class.php");
require_once("themes/UniversalTheme.class.php");
require_once("themes/VividTheme.class.php");

//===================================================
// CLASS
// Description:
//===================================================
abstract class Theme {
	protected $color_index;

	function __construct() {
		$this->color_index = 0;
	}
	/**
	 *
	 */
	abstract function GetColorList();

	/**
	 *
	 */
	abstract function ApplyPlot($plot);


	/**
	 *
	 */
	function SetupPlot($plot) {
		if (is_array($plot)) {
			foreach ($plot as $obj) {
				$this->ApplyPlot($obj);
			}
		} else {
			$this->ApplyPlot($plot);
		}
	}

	/**
	 *
	 */
	function ApplyGraph($graph) {

		$this->graph = $graph;
		$method_name = '';

		if (get_class($graph) == 'Graph') {
			$method_name = 'SetupGraph';
		} else {
			$method_name = 'Setup' . get_class($graph);
		}

		if (method_exists($this, $method_name)) {
			$this->$method_name($graph);
		} else {
			JpGraphError::RaiseL(30001, $method_name, $method_name); //Theme::%s() is not defined. \nPlease make %s(\$graph) function in your theme classs.
		}
	}

	/**
	 *
	 */
	function PreStrokeApply($graph) {
	}

	/**
	 *
	 */
	function GetThemeColors($num = 30) {
		$result_list = array();

		$old_index = $this->color_index;
		$this->color_index = 0;
		$count = 0;

		$i = 0;
		while (true) {
			for ($j = 0; $j < count($this->GetColorList()); $j++) {
				if (++$count > $num) {
					break 2;
				}
				$result_list[] = $this->GetNextColor();
			}
			$i++;
		}

		$this->color_index = $old_index;

		return $result_list;
	}

	/**
	 *
	 */
	function GetNextColor() {
		$color_list = $this->GetColorList();

		$color = null;
		if (isset($color_list[$this->color_index])) {
			$color = $color_list[$this->color_index];
		} else {
			$color_count = count($color_list);
			if ($color_count <= $this->color_index) {
				$color_tmp = $color_list[$this->color_index % $color_count];
				$brightness = 1.0 - intval($this->color_index / $color_count) * 0.2;
				$rgb = new RGB();
				$color = $color_tmp . ':' . $brightness;
				$color = $rgb->Color($color);
				$alpha = array_pop($color);
				$color = $rgb->tryHexConversion($color);
				if ($alpha) {
					$color .= '@' . $alpha;
				}
			}
		}

		$this->color_index++;

		return $color;
	}

} // Class

?>
